Actress Paula Patton has filed for divorce from singer Robin Thicke after separating earlier this year.

The 38-year-old actress filed divorce papers in Los Angeles Superior Court on October 3rd, asking for joint custody of the couple's four-year-old son.

"Blurred Lines" singer Thicke, 37, who caused a sensation with a raunchy MTV Video Music Awards performance last year with Miley Cyrus, met Patton when they were teenagers and the pair have been married since 2005. They separated in February.

Patton was the inspiration behind much of Thicke's music and appeared in some of his videos. The crooner's latest album, "Paula," a critical and commercial failure, was released in July and dedicated to Patton.